CN107246466B - Unidirectional transmission structure - Google Patents
Unidirectional transmission structure Download PDFInfo
- Publication number
- CN107246466B CN107246466B CN201710530460.9A CN201710530460A CN107246466B CN 107246466 B CN107246466 B CN 107246466B CN 201710530460 A CN201710530460 A CN 201710530460A CN 107246466 B CN107246466 B CN 107246466B
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- sprocket
- shaft
- unidirectional
- ring part
- chain
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 230000033001 locomotion Effects 0.000 abstract description 9
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/122—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and oscillating motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Transmission Devices (AREA)
- Transmissions By Endless Flexible Members (AREA)
Abstract
The invention provides a unidirectional transmission structure, which comprises a support plate, wherein an output shaft, a transmission shaft and a positioning shaft are arranged on the support plate, a unidirectional sprocket and a unidirectional sprocket shaft are arranged on the transmission shaft, and the unidirectional sprocket is connected with an output shaft chain; the positioning shaft is provided with a driving sprocket, the driving sprocket comprises a fixed part rotating around the positioning shaft, a first sprocket ring part and a second sprocket ring part, the first sprocket ring part and the second sprocket ring part are positioned on the fixed part, the unidirectional sprocket shaft is provided with a first driven sprocket and a second driven sprocket, a first chain is connected between the first sprocket ring part and the first driven sprocket, a second chain is connected between the second sprocket ring part and the second driven sprocket, and the leading-out direction of the first chain and the second chain relative unidirectional motion gear shaft is opposite; the swing mechanism further comprises a tension spring, one end of the tension spring is arranged on the fixed part, and the other end of the tension spring is connected with a swing arm.
Description
Technical Field
The invention relates to a transmission, in particular to a unidirectional transmission structure.
Background
Since the development of body-building exercises of the whole people, the effect of the physical exercises on the physical health of people is widely accepted, and the market demand of various body-building equipment rises year by year. In the process of using the fitness equipment, people pay more attention to how to use the mechanical energy by converting the consumed huge physical energy into the mechanical energy and friction heat energy of the mechanical movement of the fitness equipment.
There is increasing research on energy reuse of exercise equipment, wherein exercise power generation is the primary means of energy reuse of exercise equipment. The manual input structure of exercise devices often involves reciprocating oscillations and movements, and it is an important issue how to convert similar compound motion patterns into unidirectional rotation and ensure stable output.
Disclosure of Invention
The invention aims to provide a unidirectional transmission structure which can convert reciprocating swing translation motion into unidirectional rotation of an output shaft.
In order to achieve the purpose, the invention adopts the following technical scheme:
including the mounting panel, its characterized in that:
the support plate is provided with an output shaft, a transmission shaft and a positioning shaft, the transmission shaft is provided with a unidirectional sprocket and a unidirectional sprocket shaft, and the unidirectional sprocket is connected with the output shaft through a chain;
the positioning shaft is provided with a driving sprocket, the driving sprocket comprises a fixed part rotating around the positioning shaft, a first sprocket ring part and a second sprocket ring part, the first sprocket ring part and the second sprocket ring part are positioned on the fixed part, planes of the first sprocket ring part and the second sprocket ring part are parallel, the unidirectional sprocket shaft is provided with a first driven sprocket and a second driven sprocket, a first chain is connected between the first sprocket ring part and the first driven sprocket, a second chain is connected between the second sprocket ring part and the second driven sprocket, and the leading-out directions of the first chain and the second chain relative to the unidirectional sprocket shaft are opposite;
the swing mechanism further comprises a tension spring, one end of the tension spring is arranged on the fixed part, and the other end of the tension spring is connected with a swing arm.
Therefore, the swing arm is driven by external force to rotate and translate, the tension spring is stretched to drive the driving sprocket to rotate, the driving sprocket reversely rotates under the action of the tension spring after the external force disappears, and the unidirectional sprocket shaft is driven to rotate by the first chain and the second chain which are reversely wound.
Preferably, the support plate is provided with a tensioning wheel, and a chain is provided around the tensioning wheel, the output shaft and the transmission shaft.
Therefore, the tightness of the chain is adjusted, and the transmission efficiency is ensured.
Preferably, the unidirectional sprocket is connected with the unidirectional sprocket shaft through a unidirectional ratchet mechanism.
Therefore, the unidirectional sprocket wheel shaft and the unidirectional sprocket wheel are driven by the unidirectional ratchet wheel mechanism.
Preferably, the unidirectional sprocket shaft is provided with an annular groove, and the first driven sprocket and the second driven sprocket are respectively positioned in the annular groove.
Thereby, the wound chain is restrained.
Preferably, the first sprocket ring part and the second sprocket ring part are disposed opposite to each other on both sides of the positioning shaft.
Preferably, the swing arm is located between the first sprocket ring part and the bracket plate.
Preferably, the first sprocket ring part and the second sprocket ring part are provided with openings, the swing arm comprises two swing plates which are parallel to each other, the two swing plates are connected through a connecting column, and the connecting column passes through the opening on the second sprocket ring part.
Therefore, when the connection between the swing arm and the tension spring fails accidentally, the second sprocket ring part blocks the swing arm and limits the displacement of the swing arm.
Preferably, the inner section of the second chain is 12-18mm, and the inner section of the first chain is 8-12mm.
Thereby, the influence of the first chain on the swing arm movement is reduced when the swing arm is stretched.
In summary, the invention has the following advantages: the reciprocating swing and moving motion is converted into unidirectional rotation of the output shaft, and the device has the advantages of simple and compact overall structure, low cost, convenience in installation and maintenance, high safety and wide application range.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a side view in the direction A-A of FIG. 2;
fig. 4 is a schematic diagram of a swing arm and drive sprocket configuration.
The reference numerals in the figures are as follows:
1. the drive mechanism comprises a support plate, 2, a transmission shaft, 21, a one-way sprocket, 22, a one-way sprocket shaft, 221, a first driven sprocket, 222, a second driven sprocket, 223, an annular groove, 3, 4, a positioning shaft, 41, a driving sprocket, 411, a fixed part, 412, a first sprocket ring part, 413, a second sprocket ring part, 5, a first chain, 6, a second chain, 7, a tension spring, 8, a swing arm, 81, a swing plate, 82, a connecting post and 9, and a tensioning wheel.
Detailed Description
The invention will be further described with reference to examples of embodiments in the drawings.
As shown in fig. 1 to 4, the one-way transmission structure includes a carrier plate 1. The support plate 1 is provided with an output shaft 3, a transmission shaft 2 and a positioning shaft 4, and the rotation axis of the shafts is perpendicular to the support plate 1. The transmission shaft 2 is provided with a unidirectional sprocket 21 and a unidirectional sprocket shaft 22, the unidirectional sprocket 21 is connected with the output shaft 3 through a chain, and the unidirectional sprocket 21 rotates unidirectionally and drives the output shaft 3 to rotate through the output chain.
The positioning shaft 4 is provided with a driving sprocket 41, and the driving sprocket 41 comprises a fixing part 411 rotating around the positioning shaft 4, and a first sprocket ring part 412 and a second sprocket ring part 413 which are positioned on the fixing part 411, wherein planes of the first sprocket ring part 412 and the second sprocket ring part 413 are parallel. The unidirectional sprocket shaft 22 is provided with a first driven sprocket 221 and a second driven sprocket 222, a first chain 5 is connected between the first sprocket ring part 412 and the first driven sprocket 221, a second chain 6 is connected between the second sprocket ring part 413 and the second driven sprocket 222, and the direction of the first chain 5 and the second chain 6 which are opposite to the direction of the unidirectional sprocket shaft 22 is opposite to the direction of the drawing out of the unidirectional sprocket shaft 22. When the first chain 5 and the second chain 6 are wound around the unidirectional sprocket 21 in opposite directions and the driving sprocket 41 is reciprocally rotated in both directions by the external force, one of the first sprocket ring part 412 and the second sprocket ring part 413 drives the chain between it and the unidirectional sprocket shaft 22 to stretch and drive the unidirectional sprocket shaft 22 to rotate, and the reciprocal rotation of the unidirectional sprocket shaft 22 is converted into unidirectional rotation of the unidirectional sprocket 21.
The unidirectional transmission further comprises a tension spring 7, one end of the tension spring 7 is arranged on the fixed part 411, and the other end of the tension spring is connected with a swinging arm 8. The movement of the swing arm 8 stretches the tension spring 7, the driving sprocket 41 rotates, and after the external load acting on the swing arm 8 is reduced or eliminated, the driving sprocket 41 rotates reversely under the action of the tension spring 7.
The tensioning wheel 9 is arranged on the support plate 1, and a chain is arranged around the tensioning wheel 9, the output shaft 3 and the transmission shaft 2 to adjust tightness of the chain and ensure transmission efficiency. The unidirectional sprocket wheel 21 and the unidirectional sprocket wheel shaft 22 can be connected through a unidirectional ratchet mechanism, so as to realize the transmission between the unidirectional sprocket wheel shaft 22 and the unidirectional sprocket wheel 21.
As shown in fig. 1, the unidirectional sprocket shaft 22 is provided with an annular groove 223, and the first driven sprocket 221 and the second driven sprocket 222 are respectively located in the annular groove 223. Therefore, the coiled chain can be limited, the sudden change of chain tension caused by the sliding of the chain to two sides in the winding and loosening process is avoided, and the stability of the transmission structure in the working process is ensured.
The first sprocket ring part 412 and the second sprocket ring part 413 are oppositely disposed at both sides of the positioning shaft 4. The swing arm 8 is located between the first sprocket ring part 412 and the bracket plate 1, so that the structure is more compact. The first sprocket ring part 412 and the second sprocket ring part 413 are provided with openings, the swing arm 8 includes two swing plates 81 parallel to each other, the two swing plates 81 are connected by a connecting post 82, and the connecting post 82 is provided through the opening in the second sprocket ring part 413. At this time, when the connection between the swing arm 8 and the tension spring 7 fails accidentally, the second sprocket ring 413 can block the swing arm 8 to limit the displacement thereof, so as to avoid injury to the exerciser due to abrupt change of the displacement of the swing arm 8.
The inner section of the second chain 6 is 12-18mm in width, and the inner section of the first chain 5 is 8-12mm in width. Because the inner width of the inner section of the first chain 5 is smaller, at the moment, the impact of collision between the first chain 5 and the chain wheel and the influence of vibration on the movement of the swing arm 8 can be reduced by stretching the swing arm 8, the comfort of a user is improved, and the accumulated damage of excessive vibration to joints and muscles of the user is avoided. When the swing arm 8 moves under the tension of the tension spring 7, the contact area between the second chain 6 and the sprocket is large enough to enable the swing arm 8 to retract stably, and the condition that the second chain 6 is dislocated under the non-uniform load of the tension spring 7 and cannot be meshed with the sprocket smoothly is avoided.
The unidirectional transmission structure can be used in body-building equipment such as chest-developer, butterfly machine, stepping machine, etc., and can also be used on scooter, bicycle, etc.
The above description is only illustrative of the invention so that those skilled in the art can fully practice the present invention, but not limiting the invention, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without inventive contribution, as desired, which are not creatively modified, but are protected by patent laws within the scope of the claims of the present invention.
Claims (6)
1. A one-way transmission structure comprising a carrier plate (1), characterized in that:
an output shaft (3), a transmission shaft (2) and a positioning shaft (4) are arranged on the support plate (1), a unidirectional sprocket (21) and a unidirectional sprocket shaft (22) are arranged on the transmission shaft (2), and the unidirectional sprocket (21) is connected with the output shaft (3) through a chain;
the positioning shaft (4) is provided with a driving sprocket (41), the driving sprocket (41) comprises a fixed part (411) rotating around the positioning shaft (4), and a first sprocket ring part (412) and a second sprocket ring part (413) which are positioned on the fixed part (411), planes of the first sprocket ring part (412) and the second sprocket ring part (413) are parallel, the unidirectional sprocket shaft (22) is provided with a first driven sprocket (221) and a second driven sprocket (222), a first chain (5) is connected between the first sprocket ring part (412) and the first driven sprocket (221), a second chain (6) is connected between the second sprocket ring part (413) and the second driven sprocket (222), and the leading directions of the first chain (5) and the second chain (6) are opposite to the unidirectional sprocket shaft (22);
the device also comprises a tension spring (7), wherein one end of the tension spring (7) is arranged on the fixed part (411), and the other end of the tension spring is connected with a swinging arm (8);
the first sprocket ring part (412) and the second sprocket ring part (413) are oppositely arranged at two sides of the positioning shaft (4);
the swing arm (8) is located between the first sprocket ring part (412) and the bracket plate (1).
2. A one-way transmission structure as defined in claim 1, wherein: the support plate (1) is provided with a tensioning wheel (9), and a chain is arranged around the tensioning wheel (9), the output shaft (3) and the transmission shaft (2).
3. A one-way transmission structure as defined in claim 1, wherein: the unidirectional sprocket (21) is connected with the unidirectional sprocket shaft (22) through a unidirectional ratchet mechanism.
4. A one-way transmission structure as defined in claim 1, wherein: an annular groove (223) is formed in the unidirectional sprocket shaft (22), and the first driven sprocket (221) and the second driven sprocket (222) are respectively located in the annular groove (223).
5. A one-way transmission structure as defined in claim 1, wherein: the first sprocket ring part (412) and the second sprocket ring part (413) are provided with openings, the swinging arm (8) comprises two swinging plates (81) which are parallel to each other, the two swinging plates (81) are connected through a connecting column (82), and the connecting column (82) penetrates through the openings in the second sprocket ring part (413).
6. A one-way transmission structure as defined in claim 1, wherein: the inner section of the second chain (6) is 12-18mm in inner width, and the inner section of the first chain (5) is 8-12mm in inner width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710530460.9A CN107246466B (en) | 2017-07-03 | 2017-07-03 | Unidirectional transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710530460.9A CN107246466B (en) | 2017-07-03 | 2017-07-03 | Unidirectional transmission structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107246466A CN107246466A (en) | 2017-10-13 |
| CN107246466B true CN107246466B (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710530460.9A Active CN107246466B (en) | 2017-07-03 | 2017-07-03 | Unidirectional transmission structure |
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| Country | Link |
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| CN (1) | CN107246466B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH513350A (en) * | 1968-06-20 | 1971-09-30 | Emil Baechli Elek Sche Anlagen | Gear for converting a rotary motion into a reciprocating motion |
| CN101148239A (en) * | 2007-10-23 | 2008-03-26 | 赵修和 | Self-lifting loading device |
| CN101363522A (en) * | 2008-09-25 | 2009-02-11 | 沈阳工业大学 | Double-pulling reciprocating type chain linkage speed change mechanism |
| CN102720813A (en) * | 2012-06-27 | 2012-10-10 | 山东大学 | Multifunctional foot step type cooking machine and reciprocating foot step type chain transmission mechanism |
| CN104989799A (en) * | 2015-05-14 | 2015-10-21 | 深圳市南博自动化设备有限公司 | Device for converting reciprocating linear motion into unidirectional circular motion |
| CN206958194U (en) * | 2017-07-03 | 2018-02-02 | 浙江达因智能科技股份有限公司 | A kind of one-way transmission structure |
-
2017
- 2017-07-03 CN CN201710530460.9A patent/CN107246466B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH513350A (en) * | 1968-06-20 | 1971-09-30 | Emil Baechli Elek Sche Anlagen | Gear for converting a rotary motion into a reciprocating motion |
| CN101148239A (en) * | 2007-10-23 | 2008-03-26 | 赵修和 | Self-lifting loading device |
| CN101363522A (en) * | 2008-09-25 | 2009-02-11 | 沈阳工业大学 | Double-pulling reciprocating type chain linkage speed change mechanism |
| CN102720813A (en) * | 2012-06-27 | 2012-10-10 | 山东大学 | Multifunctional foot step type cooking machine and reciprocating foot step type chain transmission mechanism |
| CN104989799A (en) * | 2015-05-14 | 2015-10-21 | 深圳市南博自动化设备有限公司 | Device for converting reciprocating linear motion into unidirectional circular motion |
| CN206958194U (en) * | 2017-07-03 | 2018-02-02 | 浙江达因智能科技股份有限公司 | A kind of one-way transmission structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107246466A (en) | 2017-10-13 |
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Effective date of registration: 20240112 Address after: Room 102, Building 2, No. 2001 Pengfei Road, Zhili Town, Wuxing District, Huzhou City, Zhejiang Province, 313000 Patentee after: Zhejiang Desheng Power Control Technology Co.,Ltd. Address before: 313000 east side of Xunqi highway, Nanxun Town, Nanxun District, Huzhou City, Zhejiang Province Patentee before: ZHEJIANG DAYIN INTELLIGENT TECHNOLOGY CO.,LTD. |